TROUBLESHOOTINGInstructionsThe areas indicated in these troubleshooting proceduresmay be inspected, adjusted or replaced, following theprocedures in this manual, without voiding the warranty.For specific instructions on adjustments, removal andreplacement, refer to the appropriate sections in thismanual.The information contained in this section provides aguide for troubleshooting the Sundstrand Heavy Dutyhydrostatic transmissions. It is a problem solving toolaimed at eliminating unnecessary machine downtime.Following the fault-logic approach should result in theexpedient correction of transmission problems.Our experience shows that there are five (5) problemstatements that cover the majority of problemsencountered with these transmissions. These problemstatements have been set up in fault-logic diagrams onthe following pages.Following the fault-logic diagrams are descriptions ofsome of the action steps shown in the diagrams. Whereapplicable, a number for this description appears in theaction block of the diagram.Cleanliness is a primary means of insuring satisfactorytransmission life, on either new or repaired units.Cleaning parts by using a solvent wash and air drying isadequate, providing clean solvent is used. As with anyprecision equipment, the internal mechanism andrelated items must be kept free of foreign materials andchemicals.Protect all exposed sealing surfaces and open cavitiesfrom damage and foreign material.Page 12